Watch swivel



- Feb. 10, 1925 F. F. BROWN WATCH SWIVEL Fil'ed Jan; 5, 1924 w fin r wwm m mu A B n F.

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Patented Feb. 10, 1925.

UNITED STATES PATENT OFFICE.

FRANK F. BROWN, OF PAWTUGKET RHODE ISLAND, ASSIGNOR T0 GEO. H. FULLER 85 SON COMPANY, OF PAWTUCKET, RHODE ISLAND, A CORPORATION OF RHODE ISLAND.

WATCH SWIVEL.

Application filed January 5, 1924. Serial No. 684,591.

To all whom it may cont/em:

Be it known that I, FRANK F. BROWN, a citizen of the United States, residing at 51 Lupine Street. city of Pawtucket, in the county of Providence and State of Rhode Island, have invented certain new and use tul Improvements in atch Swivels, of which the following is a specification.

My invention relates to improvements in watch swivels and the purpose of my invention is to provide a watch swivel which can be securely locked so as to prevent the ring of the watch trom becoming accidentally detached from the swivel, but which can be readily disengaged when desired.

My invention consists essentially of a shell having a ring at one end thereof, and a split bow at the other end, one section of the bow being pivoted within the shell and separable from the remaining section of the bow, said sections being capable of being locked in contact with each other by means of a screw contained within the shell. 7

My invention is disclosed in detail by the accompanying drawing which is a vertical section through the middle plane of my device.

The same parts are designated by the same numerals throughout.

in this drawing, 8 represents the shell of the swivel, having integral therewith the fixed section of the bow marked 7 together with the pivoted or separable section of the bow 510. This section 5-l0 is itself pivoted upon the pin 6 which pierces both the shell and the member 510, and has integral with it the tulcrum 10.

9 is the top ring to whichthe watch chain or guard is usually attached and is revoluble upon the upper part of the shell.

4 represents the upper partrot the shell which is pierced and threaded so as to en gage with the screw 1-2, 1 being the milled head thereof and 2 the threaded body.

3 is a spiral spring surrounding the threaded body of the screw 1.2, bearing against the upper portion of the interior of the shell 8 at one end thereof and against the fulcrum 10 of the pivoted portion of the bow 510 and normally serving by compression to keep the sections 5-7 in contact, as shown in the full lines of the drawing. When it is desired to release the ring of the watch, the screw 12 is turned until the head 1 occupies the position shown by the dotted lines 1.

When this is done, the member 5 of the pivoted portion of the how can be pushed inward, as shown by the dotted lines 5, permitting the removal of the watch ring; conversely when the screw occupies the position shown by the full lines 13 it is impossible to move the pivoted portion of the bow 510 and therefore impossible for the watch ring to be accidentally or otherwise detached from the swivel.

Having now described my invention,

what I claim and desire to secure by Letters Patent is A watch swivel comprising a hollow shell; a screw projecting within said shell and threaded to the upper end thereof; a split bow consisting of a fixed member and a pivoted separable member having a iulcrum 10 operated by said screw for locking the same in closed position and a spiral spring surrounding said screw and normally operating to keep said pivoted member of the bow in contact with the fixed member, when the screw is retraced.

In testimony whereof I a-tfix my signature.

FRANK F. BROVN. 

